CVE-2026-77894
HighCVSS 7.0Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
A race condition in Windows Installer due to improper synchronization of shared resources allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with limited privileges could gain full control of the system, leading to data and resource compromise.
Recommendation
Apply the latest Windows security updates that address this vulnerability.
Other vulnerabilities in Windows Installer
See all- CVE-2014-1814High
The vulnerability in Windows Installer allows local users to gain elevated privileges via a crafted application that invokes the repair feature for a different application.
- CVE-2024-38014HighActively exploited
Elevation of privilege vulnerability in Windows Installer. An attacker could exploit it to gain elevated privileges.
- CVE-2020-0683HighActively exploited
An elevation of privilege vulnerability exists in the Windows Installer when MSI packages process symbolic links, known as 'Windows Installer Elevation of Privilege Vulnerability'.
- CVE-2026-72929High
Improper validation of integrity check value in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-71339Medium
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-69441High
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-62694High
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-70347High
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-70346High
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-70345High
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer allows an authorized attacker to elevate privileges locally.